Integrated: 8369038: Parallel: Use NMethodMarkingScope and ThreadsClaimTokenScope in psParallelCompact

[Francesco Andreuzzi]

On Thu, 2 Oct 2025 12:23:32 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

> Replace `StrongRootsScope` with `ThreadsClaimTokenScope` in `MarkFromRootsTask ` to be more precise with what is needed and why.
> 
> - `MarkFromRootsTask` uses `MarkingNMethodClosure` (in `PCAddThreadRootsMarkingTaskClosure`), so we also need `NMethodMarkingScope`.
> - `active_workers ` is guaranteed to be `> 0`
> 
> Passes tier1 and tier2 (fastdebug).

This pull request has now been integrated.

Changeset: baf8bc57
Author:    Francesco Andreuzzi <fandreuzzi at openjdk.org>
Committer: Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/baf8bc5701c43425e3345f82d4318b134b26d7c9
Stats:     6 lines in 1 file changed: 3 ins; 1 del; 2 mod

8369038: Parallel: Use NMethodMarkingScope and ThreadsClaimTokenScope in psParallelCompact

Reviewed-by: ayang, shade

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PR: https://git.openjdk.org/jdk/pull/27607